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Finding the Fourth Proportional to 10,615.04, 15,922.56 and 7,154.72

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Solution

The fourth proportional to 10,615.04, 15,922.56 and 7,154.72 is: 10,732.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,615.04 : 15,922.56 = 7,154.72 : x
  2. Step 2: Convert to fraction form
    10,615.04/15,922.56 = 7,154.72/x
  3. Step 3: Cross multiply
    10,615.04x = 15,922.56 × 7,154.72
  4. Step 4: Simplify right side
    10,615.04x = 113,921,458.48
  5. Step 5: Solve for x
    x = 113,921,458.48/10,615.04
  6. Step 6: Final answer
    x = 10,732.08

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.